“Politicash” for Android and Apple tablets and phones tracks campaign contributions to presidential nominees. We saw that President Obama’s contributors mainly work in government or universities, while Mitt Romney’s top donors often work for brokerages and banks. The app also tracks “Super Pacs,” Here Romney’s top three donors are a builder, a doctor and a hotel owner. Obama’s top Super Pac donors are from DreamWorks Animation movie company, a law firm and a technology firm. Individual donors are listed by name, right down to contributions of $250 or less.